MICRF221AYQS

Product Overview

MICRF221AYQS from Microchip Technology is a 850 MHz to 950 MHz ASK/OOK receiver. This receiver-oriented summary is written for engineers and sourcing teams that need a clear view of the receiver function, operating band and interface requirements.

The content focuses on architecture, RF band or radio standard, power/interface characteristics and practical design notes for BOM sourcing and replacement projects.

Key Features

• Manufacturer: Microchip Technology
• Part Number: MICRF221AYQS
• Device Type: 850 MHz to 950 MHz ASK/OOK receiver
• Receiver Architecture: Superheterodyne ASK/OOK receiver for upper sub-GHz ISM bands
• Frequency Range: 850 MHz to 950 MHz
• Modulation: ASK / OOK
• Receiver Sensitivity: -109 dBm class receiver sensitivity
• Data Rate: Up to 10 kbps class
• Receive Current: 9 mA class receive current
• Interface: Serial data output with RSSI support
• Package / Case: 16-pin QSOP receiver package family
• Design Notes: Select SAW/filtering and antenna match for the target 868 MHz or 915 MHz regional channel.

Applications

900 MHz remote telemetry, security, metering and low-rate proprietary wireless links.

Receiver boards that require 850 MHz to 950 MHz operation rather than 315/433 MHz bands.

Quality & Sourcing

Antrex Electronics can support sourcing for MICRF221AYQS through available stock checks, BOM consolidation and alternative-lot review. For RF receiver and radio receiver parts, package condition, lot/date code, moisture handling and original labeling should be checked before shipment.

For shortage support or legacy builds, Antrex Electronics can coordinate visual inspection, packaging verification and third-party electrical or authenticity testing when required. This helps buyers manage risk when sourcing discontinued, allocated or hard-to-find receiver ICs and modules.